Deildartunguhver Hot Spring
Deildartunguhver is Europe's most powerful hot spring, pumping 180 litres of water per second at a constant temperature of 97 degrees Celsius from deep underground in the Borgarfjördur valley of West Iceland. You cannot bathe in it, but the viewing walkways bring you remarkably close to one of the most viscerally powerful natural features in the country.
Europe's Most Powerful Hot Spring in the Borgarfjördur Valley
Deildartunguhver sits in Reykholtsdalur in West Iceland, near the historic village of Reykholt. The spring produces 180 litres of water per second at a near-constant 97 degrees Celsius, making it the highest-flow hot spring in Europe by a considerable margin. The water emerges from a rocky outcrop surrounded by heat-loving algae and mineral deposits in shades of red, orange, and green, with dense clouds of steam rising continuously above the surface. The surrounding landscape creates a striking microclimate that supports rare ferns and plant species not found elsewhere in Iceland, thriving in the warmth year-round.
The spring is not just a geological curiosity. Its output is harnessed directly for district heating, with one pipeline running 34 kilometres to Borgarnes and another stretching 64 kilometres to Akranes. Anyone who has showered or bathed within a 64-kilometre radius of Deildartunguhver has essentially used its water. The adjacent Krauma Geothermal Spa takes the same water, cools it to a range of temperatures, and offers it for bathing in a series of pools. A visit to the spring and a session at Krauma together make for a natural combination. Reykholt village, just 2 kilometres away, was the home of Snorri Sturluson, one of the most important writers of the medieval Norse world, and his 12th-century bathing pool Snorralaug is still preserved there.
Wooden walkways and viewing platforms around the spring allow you to get close safely, but the water is dangerously hot and visitors should stay strictly on the marked paths. The site is free to visit and open year-round, with a free car park on site. Deildartunguhver is located on Route 50 in West Iceland, about 100 kilometres and 90 minutes from Reykjavik via the Hvalfjördur tunnel. It makes a natural stop on the Silver Circle route and pairs well with the nearby Hraunfossar and Barnafoss waterfalls, which are around 20 minutes further east.
